diff options
Diffstat (limited to 'arch/sh/cchips/hd6446x/hd64465/setup.c')
| -rw-r--r-- | arch/sh/cchips/hd6446x/hd64465/setup.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/sh/cchips/hd6446x/hd64465/setup.c b/arch/sh/cchips/hd6446x/hd64465/setup.c deleted file mode 100644 index 9b8820c3670..00000000000 --- a/arch/sh/cchips/hd6446x/hd64465/setup.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * $Id: setup.c,v 1.4 2003/08/03 03:05:10 lethal Exp $ - * - * Setup and IRQ handling code for the HD64465 companion chip. - * by Greg Banks <gbanks@pocketpenguins.com> - * Copyright (c) 2000 PocketPenguins Inc - * - * Derived from setup_hd64461.c which bore the message: - * Copyright (C) 2000 YAEGASHI Takeshi - */ - -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/hd64465/hd64465.h> - -static void disable_hd64465_irq(unsigned int irq) -{ - unsigned short nimr; - unsigned short mask = 1 << (irq - HD64465_IRQ_BASE); - - pr_debug("disable_hd64465_irq(%d): mask=%x\n", irq, mask); - nimr = inw(HD64465_REG_NIMR); - nimr |= mask; - outw(nimr, HD64465_REG_NIMR); -} - -static void enable_hd64465_irq(unsigned int irq) -{ - unsigned short nimr; - unsigned short mask = 1 << (irq - HD64465_IRQ_BASE); - - pr_debug("enable_hd64465_irq(%d): mask=%x\n", irq, mask); - nimr = inw(HD64465_REG_NIMR); - nimr &= ~mask; - outw(nimr, HD64465_REG_NIMR); -} - -static void mask_and_ack_hd64465(unsigned int irq) -{ - disable_hd64465_irq(irq); -} - -static void end_hd64465_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_hd64465_irq(irq); -} - -static unsigned int startup_hd64465_irq(unsigned int irq) -{ - enable_hd64465_irq(irq); - return 0; -} - -static void shutdown_hd64465_irq(unsigned int irq) -{ - disable_hd64465_irq(irq); -} - -static struct hw_interrupt_type hd64465_irq_type = { - .typename = "HD64465-IRQ", - .startup = startup_hd64465_irq, - .shutdown = shutdown_hd64465_irq, - .enable = enable_hd64465_irq, - .disable = disable_hd64465_irq, - .ack = mask_and_ack_hd64465, - .end = end_hd64465_irq, -}; - -static irqreturn_t hd64465_interrupt(int irq, void *dev_id) -{ - printk(KERN_INFO - "HD64465: spurious interrupt, nirr: 0x%x nimr: 0x%x\n", - inw(HD64465_REG_NIRR), inw(HD64465_REG_NIMR)); - - return IRQ_NONE; -} - -/* - * Support for a secondary IRQ demux step. This is necessary - * because the HD64465 presents a very thin interface to the - * PCMCIA bus; a lot of features (such as remapping interrupts) - * normally done in hardware by other PCMCIA host bridges is - * instead done in software. - */ -static struct { - int (*func)(int, void *); - void *dev; -} hd64465_demux[HD64465_IRQ_NUM]; - -void hd64465_register_irq_demux(int irq, - int (*demux)(int irq, void *dev), void *dev) -{ - hd64465_demux[irq - HD64465_IRQ_BASE].func = demux; - hd64465_demux[irq - HD64465_IRQ_BASE].dev = dev; -} -EXPORT_SYMBOL(hd64465_register_irq_demux); - -void hd64465_unregister_irq_demux(int irq) -{ - hd64465_demux[irq - HD64465_IRQ_BASE].func = 0; -} -EXPORT_SYMBOL(hd64465_unregister_irq_demux); - -int hd64465_irq_demux(int irq) -{ - if (irq == CONFIG_HD64465_IRQ) { - unsigned short i, bit; - unsigned short nirr = inw(HD64465_REG_NIRR); - unsigned short nimr = inw(HD64465_REG_NIMR); - - pr_debug("hd64465_irq_demux, nirr=%04x, nimr=%04x\n", nirr, nimr); - nirr &= ~nimr; - for (bit = 1, i = 0 ; i < HD64465_IRQ_NUM ; bit <<= 1, i++) - if (nirr & bit) - break; - - if (i < HD64465_IRQ_NUM) { - irq = HD64465_IRQ_BASE + i; - if (hd64465_demux[i].func != 0) - irq = hd64465_demux[i].func(irq, hd64465_demux[i].dev); - } - } - return irq; -} - -static struct irqaction irq0 = { - .handler = hd64465_interrupt, - .flags = IRQF_DISABLED, - .mask = CPU_MASK_NONE, - .name = "HD64465", -}; - -static int __init setup_hd64465(void) -{ - int i; - unsigned short rev; - unsigned short smscr; - - if (!MACH_HD64465) - return 0; - - printk(KERN_INFO "HD64465 configured at 0x%x on irq %d(mapped into %d to %d)\n", - CONFIG_HD64465_IOBASE, - CONFIG_HD64465_IRQ, - HD64465_IRQ_BASE, - HD64465_IRQ_BASE+HD64465_IRQ_NUM-1); - - if (inw(HD64465_REG_SDID) != HD64465_SDID) { - printk(KERN_ERR "HD64465 device ID not found, check base address\n"); - } - - rev = inw(HD64465_REG_SRR); - printk(KERN_INFO "HD64465 hardware revision %d.%d\n", (rev >> 8) & 0xff, rev & 0xff); - - outw(0xffff, HD64465_REG_NIMR); /* mask all interrupts */ - - for (i = 0; i < HD64465_IRQ_NUM ; i++) { - irq_desc[HD64465_IRQ_BASE + i].chip = &hd64465_irq_type; - } - - setup_irq(CONFIG_HD64465_IRQ, &irq0); - - /* wake up the UART from STANDBY at this point */ - smscr = inw(HD64465_REG_SMSCR); - outw(smscr & (~HD64465_SMSCR_UARTST), HD64465_REG_SMSCR); - - /* remap IO ports for first ISA serial port to HD64465 UART */ - hd64465_port_map(0x3f8, 8, CONFIG_HD64465_IOBASE + 0x8000, 1); - - return 0; -} -module_init(setup_hd64465); |